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ISO-WD32250 Magnesium vs. 7116 Aluminum

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while 7116 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ISO-WD32250 magnesium and the bottom bar is 7116 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 4.5 to 8.6
7.8
Fatigue Strength, MPa 170 to 210
160
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 180 to 190
220
Tensile Strength: Ultimate (UTS), MPa 310 to 330
370
Tensile Strength: Yield (Proof), MPa 240 to 290
330

Thermal Properties

Latent Heat of Fusion, J/g 340
380
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 550
520
Specific Heat Capacity, J/kg-K 980
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
46
Electrical Conductivity: Equal Weight (Specific), % IACS 130
140

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.9
Embodied Carbon, kg CO2/kg material 24
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
28
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
790
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 67
47
Strength to Weight: Axial, points 49 to 51
35
Strength to Weight: Bending, points 58 to 60
39
Thermal Diffusivity, mm2/s 72
58
Thermal Shock Resistance, points 19 to 20
16

Alloy Composition

Aluminum (Al), % 0
91.5 to 94.5
Copper (Cu), % 0
0.5 to 1.1
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0
0 to 0.3
Magnesium (Mg), % 94.9 to 97.1
0.8 to 1.4
Manganese (Mn), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 2.5 to 4.0
4.2 to 5.2
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0
0 to 0.15